Low fuel pressure?

2000 GMC SIERRA
200,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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RODPOD
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On a cold start it will crank up then go shut off. Like it's not getting enough fuel. Can hold the accelerator down when it cranks up for a few seconds and after that it will stay running. Every time after that initial start it will crank up and run fine.
Sep 22, 2024 at 7:35 AM
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JACOBANDNICKOLAS
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Hi,

The fuel pressure could be dropping off. Here is what I need you to try and let me know the results.

1) Turn the key from off to the run position (engine off) and count to 5
2) Turn the key off and repeat step 1 a total of 5 times.
3) On the 6th time, see if it starts normally.

Let me know the results. Also, if you have access to a live data scan tool, check what the coolant temperature sensor is indicating before starting it cold.

Let me know.

Joe
Sep 22, 2024 at 8:17 PM